Thank you all, but it looks like it's too late. I shut the computer down when I went to work, everything looked normal, but when I came back and turned it on - blackness on my monitor. Luckily I still have some of my old hardware. Swapped the motherboard (and RAM because of incompatibility) and I'm up and running. And no BSODs so far. It's not completely dead though. Power comes on, fans are spinning, there's even some initial hdd led activity, but no video. It's probably time for me to join the expensive Intel team :-/